JPS58101825A - Autobicycle mounted with v-type engine - Google Patents

Abstract

PURPOSE:To decrease a wheelbase and easily mount and remove rear arms, by connecting body main unit side supporting parts of the lateral rear arms supporting a rear wheel through pivot shafts, forming an opening between internal ends of the pivot shafts and inserting exhaust pipes of a rear cylinder. CONSTITUTION:A V-type engine 1 is longitudinally provided with two exhaust cylinders 1a, 1b, and four cylinders are arranged longitudinally to be in a V- shape. Here left and right rear arms 5 for supporting a rear wheel 4 are supported to rear parts 1c of an engine frame through left and right pivot shafts 8 to form internal end parts of the both pivot shafts 8 to a space part 10 opened with only the front side. Then exhaust pipes 3b protruded rearward from the rear cylinder 1b and extended downward are inserted into said space part 10 and connected to exhaust chambers 6. In this way, a wheelbase can be shortened by a distance corresponding to the shaft 8 while the rear arm 5 can be easily mounted and removed.

Description

[Detailed description of the invention] In more detail, it is possible to shorten the wheelbase and make it easier to clean the rear arm. This relates to a motorcycle equipped with an I engine.

vI! For motorcycles equipped with an engine, the ** pipe in the rear section should be extended towards the rear of the aircraft, then downward &: downward 4
There are some things that are similar to this.

Conventionally, the extension of this exhaust pipe has been placed on the rear wheel side so as to straddle a single pivot shaft that laterally crosses the fuselage body side supporting portions of the left and right rear arms that support the rear wheels. There was a problem in that the wheelbase had to be lengthened by the amount occupied by the exhaust pipe.Also, when the rear arm was removed from the aircraft together with the rear wheel, the pilot pipe straddled the pivot axis as described above. Because it is located on the rear wheel side,
The trouble of having to remove the exhaust pipe every time the seedlings are planted is gone.

The purpose of the present invention is to solve the above-mentioned problems in motorcycles equipped with a V-type engine, to shorten the wheelbase, and to facilitate attachment and detachment of the rear arm.
The present invention aims to provide a motorcycle equipped with such a V-type engine.

The above purpose is 1! A related motorcycle equipped with a V-type engine according to the present invention has front and rear v! In a motorcycle equipped with an Ll engine, the support parts on the body side of the left and right rear arms that support the rear wheels are connected by independent left and right pivot shafts, and the inner ends of the left and right pivot shafts are connected to the front side of the body. It is characterized in that the opening is shaped like an empty space, and the exhaust pipe of the rear cylinder is inserted through the middle layer.

Hereinafter, the present invention will be specifically explained using a practical example shown in the following.

No. iml is a steel plan view showing the main parts of a motorcycle according to an embodiment of the present invention, with the front wheel portion removed.

In this figure, 1 is a v
l! ! 4 is an engine, and 4 is a single wheel that is supported via a rear arm 5 with respect to a frame on the side of the main body of the aircraft.

No. 211. 3rd @, 40th! As detailed in l, Queen vI! ! Engine 1 is at the front! It has two units 11la and 11a, and two rear units 111b and lb at the rear, and 41 units are arranged in a V-shape in the front and rear. Front part 111a la and tb
, tb, @trachea 2a, 2a, 2b, respectively.

2b is provided. On the other hand, the exhaust pipe 3at 3at of the front part 1a + 1a! After protruding forward, it is connected to the exhaust chamber 6 located below the engine 1, and after the wI trachea 3a+3a of the rear cylinders 1b and lb extends rearward,
It is bent downward and similarly connected to the exhaust chamber 6. At the rear of this II Kan chamber 6, there are mufflers 7 on the left and right.
．． 7 is provided so that the exhaust gas that has merged into the exhaust chamber 6 from the exhaust pipes 3a and 3b is discharged into the atmosphere while being muffled.

Rear arms 5 provided on the left and right to support the rear wheels 4
．． 5 is supported and connected to the engine frame painted part IC on the fuselage main body side via pivot shafts 8 and 8 provided independently on the left and right sides, respectively. The support portion side of the rear arm 5.5 is connected and fixed by the left and right sides to be integral with each other by a gusset (9), and as described above, the pivot shaft 8.8 is independently placed horizontally, so that both sides are connected and fixed together. The space between the inner ends of the pivot shaft 8.8 is formed as the middle layer 10, and this space 111
The rear part of 0 is closed by the front line of the gusset 9, but the front side is shaped to be an open soft line. Exhaust pipes 3b, 3b which protrude rearward from the rear cylinders 1b, lb and extend downward are inserted into this space 111G and connected to the exhaust chamber 6.

Therefore, according to the above-mentioned horizontal orientation, the pivot axis 8.8
A middle layer part 10 is formed by separating the left and right sides,
By inserting the rear cylinder 1b and the lb III tubes 3b and 3b into the space ill opening, it is possible to reduce the odor in the longitudinal direction of the casing by the amount corresponding to the pivot shafts 8, 8. As a result, the wheelbase can be shortened accordingly. In addition, when the rear arm 5.5 is removed from the fuselage body side together with the rear wheel 4 for repair, since the front side of the middle section 10 is covered with a mist hole, it is necessary to remove the exhaust pipe 3b from the exhaust pipe 3b as before. , 3b can be easily removed from the pivot shaft 8.8 without having to remove them each time, and the work efficiency can be significantly improved.

When installed again, the building also has IIF Kansuga 3b and 3b on the same authority as above.
He is self-reliant by doing heavy work while fixing it to 1b, lb.

As described above, in the motorcycle equipped with front and rear V-type engines according to the present invention, the body-side support portions of the left and right rear arms that support the rear wheels are connected by independent left and right pivot shafts, and the right and left pivot shafts are connected to each other by independent pivot shafts. The darkness at the inner end is shaped into the middle part that opens on the front side of the fuselage, and the exhaust pipe of the VK Hiroka is inserted into the middle part, and it is placed horizontally, so the wheelbase can be adjusted to MtlA by the amount equivalent to the pivot axis. Moreover, the work of attaching and detaching the rear arm can be carried out extremely easily and easily without the need to remove the exhaust pipe each time as in the conventional case.

[Brief explanation of drawings]

FIG. 1 is a side view showing the front wheel of a motorcycle according to an embodiment of the present invention. 1 is a perspective view of a main part of the engine section of the Oka motorcycle, No. 31I is a plan view of the main part of Oka, and FIG. 4 is a sectional view taken along the line ■--■ in FIG. 3. 1...vl! Engine, la...front part, lb...shobe ■, 3a, 3b...exhaust pipe. 4. Rear wheel, 5. Rear arm, 6. II exhaust chamber, 8. Bipot F axis, 10. Empty part. Agent: Patent Attorney Makoto Ogawa − Patent Attorney: Ken Noguchi Patent Attorney: Kazuhiko Saishita

Claims (1)

[Claims] Mae frugal v! ! In a motorcycle equipped with an engine, the body-side support parts of the left and right rear arms that support the rear wheels are connected by independent left and right pivot shafts, and the inner ends of the left and right pivot shafts are integrally opened on the front side. A motorcycle equipped with a V-type engine, which is shaped like a dark space, and is characterized in that a tube of the #1 III is inserted into the #1 II of the sky.